Home / 77,830.46-116,100.78-75,536.16

Finding the Fourth Proportional to 77,830.46, 116,100.78 and 75,536.16

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Solution

The fourth proportional to 77,830.46, 116,100.78 and 75,536.16 is: 112,678.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,830.46 : 116,100.78 = 75,536.16 : x
  2. Step 2: Convert to fraction form
    77,830.46/116,100.78 = 75,536.16/x
  3. Step 3: Cross multiply
    77,830.46x = 116,100.78 × 75,536.16
  4. Step 4: Simplify right side
    77,830.46x = 8,769,807,094.20
  5. Step 5: Solve for x
    x = 8,769,807,094.20/77,830.46
  6. Step 6: Final answer
    x = 112,678.34

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.